Morning everyone!

I've run into some more issues with these cursed brakes. There's no fluid flow through the brake lines! I've checked the front and what little bit I can see of the rear and I'm unable to find any evidence of leaks, and the fluid level doesn't appear to be dropping any when left to sit for an extended period of time (24 hours plus).

Dumb question, but is the master cylinder or booster electronically driven? I've had the battery out and on a maintainer while the cat has been off the road and thought I would ask.

Ant ideas?

Thanks!

 

Check the rubber flex hoses. I've had occasions whereby they collapse internally and block fluid flow, although one hose should not affect all 4 wheels.

 

If you have a Series I-II-III XJ6 sedan there's no electrical aspect to the brakes.

If there's no fluid flow then the master cylinder isn't working. Or there's a blockage...such as a collapsed hose.

How/where did you determine there was no flow?

Cheers
DD

 

There is a balancer between the front and the rear mounted on the Driver's side (left hand drive) on the chassis frame that will prevent flow. See pics of mine that I had to take apart to clean. Testimony to changing the brake fluid on a scheduled basis.


Apart

Gunked up

 

Hey all, sorry for the trouble! Excellent advice though, so plus one for that!

I fear I may have jumped the gun too much and I believe there was just a pocket. Hooked everything back up, opened the bleeders and walked away and came back to find the brake reservoir nearly empty and the water bottles hooked to the bleeders filled. Closed off the bleeders, filled the reservoir back up and now all appears OK. Waiting a few for another leak check at the moment.

As an aside, if I may ask another stuoid question, am I correct to say that if the brake pedal is depressed to the floor the front axles should not be able to be moved by hand? (i.e. grabbing the rotor or the lugs and giving them a spin)

 

If the pedal is truly to the floor then you're not developing much, if any, hydraulic pressure....and it may well be possible to spin the hubs by hand.

If the system is bled and working properly the pedal won't go to the floor and you won't be able to spin the hubs with the pedal depressed.

Cheers
DD